CNBC’s Jim Cramer said Monday he’s tested positive for Covid and isolating at home with a mild case. “I have Covid. I came down with Covid on Thursday night,” Cramer said on “Squawk on the Street.” He added he’s been triple vaccinated: two shots of Moderna and a Moderna booster. “I know exactly how I got it,” he said. “I was at an event where you had to have PCR [tests].” “I got it that night from someone who was tested that day,” he said. “The problem is it works so fast. You can’t stop it. Cramer said his wife...